ComScore: Bing market share up in June

Though Bing brought its search-engine market share up 0.4 percentage points in June, Microsoft’s piece of the pie shrank by 0.6 percentage points year over year, according to a new comScore report.

In fact, even as Microsoft started drawing from its reported $80 million Bing advertising budget, Google’s share stayed steady at 65 percent of U.S. Web searches. Though the numbers are small and – after one month since the launch of Bing – it’s too soon to see trends, Microsoft seems to have drawn traffic from Yahoo, according to comScore numbers.

Microsoft’s search share increased from 8.02 percent in May, when its engine was still Live Search, to 8.4 percent in June. Ask’s and AOL’s shares increased slightly, but Yahoo’s dropped by 0.5 percentage points.

But Bing’s share didn’t reach the level Microsoft had in January, when it fielded 8.5 percent of U.S. Web searches. And in June 2008, the Microsoft search network captured 9.2 percent of the market, versus 8.4 percent this past June, according to comScore.

ComScore hasn’t yet publicly released its report, but gave it to Wall Street firms Tuesday. J.P. Morgan gave All Things Digital – the Wall Street Journal’s technology blog – some numbers today. And TechCrunch got the report from Barclays Capital.